Is C Peptide 4.6 high, normal or dangerous? What does C Peptide level 4.6 mean?

📅 Medical Review Date: February 17, 2026

Your C Peptide level of 4.6 is a High C Peptide level.

High C Peptide levels may indicate underlying health problems. The normal range is typically between 1.1 ng/mL and 4.4 ng/mL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal C Peptide range for men is :1.1 - 4.4 ng/mL

Ideal values of C Peptide depending on age (male) :

Age	Ideal C Peptide value
<5 years	1.151
5-10 years	1.204
10-15 years	1.259
15-20 years	1.317
20-25 years	1.378
25-30 years	1.441
30-35 years	1.507
35-40 years	1.576
40-45 years	1.648
45-50 years	1.724
50-55 years	1.803
55-60 years	1.886
60-70 years	1.973
70-80 years	2.064
80-90 years	2.159
90-100 years	2.258
>100 years	2.362

*Ideal values are calculated based on our database of patient records

Get Advice via Email : Send us your blood test report, and our C Peptide experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides C Peptide, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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Normal range of C Peptide found among women :1.1-4.4 ng/mL

Ideal values of C Peptide depending on age (female) :

Age	Ideal C Peptide value
<5 years	1.152
5-10 years	1.207
10-15 years	1.264
15-20 years	1.324
20-25 years	1.387
25-30 years	1.453
30-35 years	1.522
35-40 years	1.594
40-45 years	1.67
45-50 years	1.749
50-55 years	1.832
55-60 years	1.919
60-70 years	2.01
70-80 years	2.105
80-90 years	2.205
90-100 years	2.309
>100 years	2.418

If you take a C Peptide blood test and the results are not in the normal range (1.1-4.4 ng/mL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the C Peptide Test Is Done :

When your doctor orders a C Peptide test, it involves a straightforward blood draw to measure your C Peptide levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your C Peptide test results are usually available within a few hours.

Medical References

• MedlinePlus – C-Peptide Test
• Cleveland Clinic – C-Peptide Test: What It Is, Purpose, Procedure & Results
• WebMD – What Is a C-Peptide Test?
• NIH – C-peptide in diabetes diagnosis and management